So there I was, about to go out on a mission, suddenly I got "You've Got That Lovin Feeling" stuck in my head. It was there for about 8 hours or so.
This is a 3 parter.
#1. What's the longest a song has been stuck in your head?
#2 What's the worst song you've ever had stuck in your head?
#3 What's the best song you've had stuck in your head?

1. A whole day
2. I only get good songs stuck in my head, thankfully.
3. Comfortably Numb (Pink Floyd)

1. Months
2. Yellow Submarine
3. Yellow Submarine

I am incapable of memorizing any songs, no matter their length. I have that song memorized. Including the chords(not so difficult)

1. A day
2. The Macaraina (sp?)
3. Comfortably Numb (thanks Evak!)

A day

Mama don't let your babies grow up to be cowboys

The guitar battle at the end of the movie Crossroads